Uh, it's a bug. IIRC You're not supposed to have the [Lie] option after persuading the Drones to hand over the train, and thus none of the weird "you messed up our plans real bad but we still really like you" gets to happen. However, I could leave the lie option for those players who want to be absolute jerks, as Sanger pointed out, but the Drones won't approach you after that, of course.
What do you guys think?